- 您现在的位置：买卖IC网 > PDF目录383329 > MAX1630 (Maxim Integrated Products, Inc.) Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers PDF资料下载
参数资料
| 型号： | MAX1630 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| 中文描述： | 多输出、低噪声电源控制器，用于笔记本电脑 |
| 文件页数： | 7/28页 |
| 文件大小： | 237K |
| 代理商： | MAX1630 |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
M
Multi-Output, Low-Noise Power-S upply
Controllers for Notebook Computers
_______________________________________________________________________________________
7
_________________________________________________Pin Desc ription (c ontinued)
PIN
FUNCTION
NAME
Dual-Purpose Timing Capacitor Pin and ON/
OFF
Control Input. See Power-Up Sequencing and
ON/
OFF
Controls section.
Low-Noise Analog Ground and Feedback Reference Point
TIME/ON5
7
Oscillator Synchronization and Frequency Select. Tie to VL for 300kHz operation; tie to GND for 200kHz
operation. Can be driven at 240kHz to 350kHz for external synchronization.
SYNC
6
Active-Low Timed Reset Output.
RESET
swings GND to VL. Goes high after a fixed 32,000 clock-cycle
delay following power-up.
Feedback Input for the 5V SMPS; regulates at FB5 = REF (approx. 2.5V) in adjustable mode. FB5 is a
Dual Mode input that also selects the 5V fixed output voltage setting when tied to GND. Connect FB5 to
a resistor divider for adjustable-output mode.
Current-Sense Input for the 5V SMPS. Also serves as the feedback input in fixed-output mode, and as
the bootstrap supply input when the voltage on CSL5/VL is > 4.5V.
RESET
11
Logic-Control Input that disables Idle Mode when high. Connect to GND for normal use.
SKIP
10
2.5V Reference Voltage Output. Bypass to GND with 1μF minimum.
REF
9
GND
8
FB5
12
Gate-Drive Output for the 5V, high-side N-channel switch. DH5 is a floating driver output that swings
from LX5 to BST5, riding on the LX5 switching node voltage.
Switching Node (inductor) Connection. Can swing 2V below ground without hazard.
DH5
16
Pin-Strap Input that selects the SMPS power-up sequence:
SEQ = GND: 5V before 3.3V,
RESET
output determined by both outputs
SEQ = REF: Separate ON3/ON5 controls,
RESET
output determined by 3.3V output
SEQ = VL: 3.3V before 5V,
RESET
output determined by both outputs
SEQ
15
Power Ground
5V Internal Linear-Regulator Output. VL is also the supply voltage rail for the chip. After the 5V SMPS
output has reached +4.5V (typical), VL automatically switches to the output voltage via CSL5 for boot-
strapping. Bypass to GND with 4.7μF. VL supplies up to 25mA for external loads.
PGND
20
Gate-Drive Output for the low-side synchronous-rectifier MOSFET. Swings 0V to VL.
DL5
19
Boost capacitor connection for high-side gate drive (0.1μF)
BST5
18
LX5
17
Current-Sense Input for the 5V SMPS. Current-limit level is 100mV referred to CSL5.
CSH5
14
CSL5
13
Shutdown Control Input, active low. Logic threshold is set at approximately 1V. For automatic start-up,
connect
SHDN
to V+ through a 220k
resistor and bypass
SHDN
to GND with a 0.01μF capacitor.
Gate-Drive Output for the low-side synchronous-rectifier MOSFET. Swings 0V to VL.
SHDN
23
Battery Voltage Input, +4.2V to +30V. Bypass V+ to PGND close to the IC with a 0.22μF capacitor.
Connects to a linear regulator that powers VL.
V+
22
VL
21
Supply Voltage Input for the 12OUT Linear Regulator. Also connects to an internal resistor divider for
secondary winding feedback, and to an 18V overvoltage shunt regulator clamp.
V
DD
(MAX1630/
32/33/35)
Secondary Winding Feedback Input. Normally connected to a resistor divider from an auxiliary output.
SECFB regulates at V
SECFB
= 2.5V (see Secondary Feedback Regulation Loop section). Tie to VL if not
used.
SECFB
(MAX1631/
MAX1634)
Boost Capacitor Connection for high-side gate drive (0.1μF)
Switching Node (inductor) Connection. Can swing 2V below ground without hazard.
BST3
LX3
25
26
DL3
24
ON/
OFF
Control Input. See Power-Up Sequencing and ON/
OFF
Controls section.
RUN/ON3
28
Gate-Drive Output for the 3.3V, high-side N-channel switch. DH3 is a floating driver output that swings
from LX3 to BST3, riding on the LX3 switching node voltage.
DH3
27
5
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1631 | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| MAX1631CAI | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| MAX1631EAI | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| MAX1632 | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
| MAX1632CAI | Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1630CAI | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1630CAI+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1630CAI-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1630EAI | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1630EAI-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
发布紧急采购，3分钟左右您将得到回复。